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From: Emanuel Berg via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org>
To: help-gnu-emacs@gnu.org
Subject: Re: font-lock with functions
Date: Thu, 11 Feb 2021 21:56:50 +0100	[thread overview]
Message-ID: <87wnvecoh9.fsf@zoho.eu> (raw)
In-Reply-To: trinity-8a35c837-6bca-4993-912e-41059dd85532-1613072288450@3c-app-mailcom-bs11

wael-zwaiter wrote:

> (defconst my-font-lock
>   (append
>       nil
>       '( (my-match
> 	  (1 (my-bigfont (match-beginning 0)) append))) )
>   "Description.")

Uhm, what is this intended to do?

Appending nil to a list doesn't do anything

  (append nil '(1 2 3)) ; (1 2 3)

because nil is actually the empty list, try `eval' these

  nil
  ()
  '()
  `()
  (list)
  (append nil () '() `() (list))

-- 
underground experts united
http://user.it.uu.se/~embe8573
https://dataswamp.org/~incal




      reply	other threads:[~2021-02-11 20:56 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-11 13:02 font-lock with functions wael-zwaiter
2021-02-11 19:38 ` wael-zwaiter
2021-02-11 20:56   ` Emanuel Berg via Users list for the GNU Emacs text editor [this message]

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